Submission #500642

#	Time	Username	Problem	Language	Result	Execution time	Memory
500642		kwongweng	Bank (IZhO14_bank)	C++17	71 / 100	1004 ms	332 KiB

bank

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef long double ld;
typedef pair<pair<ll, ll>, pair<ll, ll>> lll;
typedef pair<int, ii> iii;

#define pb push_back
#define ms memset
#define fi first
#define se second
#define FOR(i, a, b) for (int i = a; i < b; i++)
#define ROF(i, a, b) for (int i = a; i >= b; i--)

ll MOD = 1000000007;

ll power(ll base, int n){
    if (n == 0) return 1;
    if (n == 1) return base;
    ll halfn  = power(base, n/2);
    if (n % 2 == 0) return (halfn * halfn) % MOD;
    return (((halfn * halfn) % MOD) * base) % MOD;
}

ll inverse(int n){
    return power(n, MOD-2);
}

ll gcd(ll a, ll b){
    if (a == 0) return b;
    if (a == 1) return 1;
    return gcd(b % a, a);
}

ll lcm(ll a, ll b){
    return (a * b) / gcd(a, b);
}

const int N = 100001;

int n, m;
vi a(20), b(20);
bool sol = false;

void DP(int mask, int pos){
    if (pos == n){
        sol = true; return;
    }
    FOR(i, 0, (1<<m)){
        if ((mask^i) == mask-i){
            int val = 0;
            FOR(j, 0, m){
                if (i & (1<<j)){
                    val += b[j];
                }
            }
            if (val == a[pos]){
                DP(mask^i, pos+1);
            }
        }
    }
}
void solve(){
    cin >> n >> m;
    FOR(i, 0, n) cin >> a[i];
    FOR(i, 0, m) cin >> b[i];
    DP((1<<m)-1, 0);
    if (sol) cout << "YES\n";
    else cout << "NO\n";

    return ;
}

int main(){

    ios::sync_with_stdio(false);
    int TC = 1; 
    //cin >> TC;
    FOR(i, 1, TC+1){
        //cout << "Case #" << i << ": ";
        solve();
    }
    return 0;
}

• Subtask 1: 19 / 19
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 0 / 29